Prediction of a weakly bound excited state of Efimov character in a (LiHe2)-Li-7-He-4 system

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 理论与交叉研究部

	Prediction of a weakly bound excited state of Efimov character in a (LiHe2)-Li-7-He-4 system
	Wu, Meng-Shan 1,2; Han, Hui-Li 1; Li, Cheng-Bin 1; Shi, Ting-Yun 1
刊名	PHYSICAL REVIEW A
	2014-12-08
卷号	90 期号:6
英文摘要	We carry out calculations on the van der Waals trimer (LiHe2)-Li-7-He-4 using the mapping method within the frame of hyperspherical coordinates, which allows us to give accurate binding energies and wave functions for both the ground and excited state of the system. When the realistic two-body potentials are adopted, the system presents an excited state which shows Efimov character. We study the range of the interaction strength in which the excited state could exist and find that the state persists within the experiment error band for binding energy of LiHe molecule. We also study the three-body parameter (3BP) of (LiHe2)-Li-7-He-4 system and its relationship with the background scattering length alpha(HeHe). Our calculations demonstrate that the 3BP of (LiHe2)-Li-7-He-4 system is dependent on the value of the scattering length aHeHe, independent of the short-range details of the He-He interaction. The results confirm the prediction of Wang et al. [Phys. Rev. Lett. 109, 243201 (2012)] that the 3BP for a heteronuclear atomic system is universally determined from the van der Waals lengths and the homonuclear scattering length.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Optics ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Optics ; Physics
关键词[WOS]	LONG-RANGE MOLECULES ; HELIUM DIMER ; ENERGY ; TRIMER ; ATOMS ; UNIVERSALITY ; POTENTIALS ; SPECTRUM ; BINDING ; LENGTH
收录类别	SCI
语种	英语
WOS记录号	WOS:000346045400007
公开日期	2015-07-14
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/1510]
专题	武汉物理与数学研究所_理论与交叉研究部
作者单位	1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu, Meng-Shan,Han, Hui-Li,Li, Cheng-Bin,et al. Prediction of a weakly bound excited state of Efimov character in a (LiHe2)-Li-7-He-4 system[J]. PHYSICAL REVIEW A,2014,90(6).
APA	Wu, Meng-Shan,Han, Hui-Li,Li, Cheng-Bin,&Shi, Ting-Yun.(2014).Prediction of a weakly bound excited state of Efimov character in a (LiHe2)-Li-7-He-4 system.PHYSICAL REVIEW A,90(6).
MLA	Wu, Meng-Shan,et al."Prediction of a weakly bound excited state of Efimov character in a (LiHe2)-Li-7-He-4 system".PHYSICAL REVIEW A 90.6(2014).